A welcome series is a short, automated sequence that greets new subscribers the moment they sign up; a drip campaign is any set of pre-written messages delivered on a schedule or by behaviour to nurture someone over time. The welcome series is the first drip everyone should build — because welcome messages get the highest open rates of any send, often above 35%.
The logic is simple: attention peaks at signup and decays fast. A good welcome series captures that peak — confirming the decision, setting expectations, and guiding the first action — while a longer drip keeps the relationship warm afterward. Here's how to build both.
Key takeaways
- Welcome emails get the highest open rates of any automated send — don't waste them on a bare "thanks."
- A welcome series has a job per message: confirm, set expectations, deliver value, invite action.
- Drip campaigns nurture over time; behaviour-triggered drips beat fixed schedules.
- Three to four messages usually outperforms one long email or a ten-part marathon.
- Run it across channels — deliver on whichever one the subscriber opted into, and follow up where they engage.
What's the difference between a welcome series and a drip campaign?
They overlap, so it's worth being precise. A drip campaign is the general category: any automated sequence of messages sent over time. A welcome series is a specific, high-value drip that fires right after someone subscribes.
Put differently: every welcome series is a drip campaign, but not every drip is a welcome series. You might also run a drip for onboarding a new customer, nurturing a cold lead, or re-engaging a quiet one.
What should each welcome message do?
Give every message one clear job. A four-part welcome series maps cleanly onto the new subscriber's first week:
| # | Message | Job |
|---|---|---|
| 1 | Instant welcome | Confirm, deliver the promised perk, set expectations |
| 2 | Who we are | Tell your story / show the core benefit |
| 3 | Proof | Social proof, results, a useful win |
| 4 | Invitation | A clear first action — shop, book, reply |
Don't sell hard in message one. Earn the open in two by being genuinely useful, and the offer in four converts far better.
How long should the sequence be?
Long enough to do the job, short enough to finish. For a welcome series, three to four messages over the first week is the sweet spot for most businesses.
- Too short (one email): you waste peak attention and never build a habit.
- Too long (ten emails): people tune out and your numbers sag.
- Spacing: front-load — instant, then day 2, day 4, day 7 — while interest is high.
- Always have a clear exit: when someone converts, move them out of the welcome drip.
Should welcome flows run on email or WhatsApp?
Deliver on the channel they opted into, and use the other to catch what's missed. The two reinforce each other:
- 1Send the welcome on the channel they chose (email or WhatsApp).
- 2If an email welcome goes unopened, follow up on WhatsApp where it gets seen in minutes.
- 3Use email for the longer story and proof; use WhatsApp for the quick, high-intent nudge.
- 4Keep one contact record so the sequence doesn't double-send across channels.
In oToK a single welcome flow can branch across email and WhatsApp, with an automatic fallback when the first channel goes quiet.
How do I measure a welcome series?
Judge it by what happens after the open, not the open itself. The metrics that matter:
- Completion rate: how many subscribers reach the final message still engaged.
- First-action rate: how many take the step you invited (purchase, booking, reply).
- Time-to-first-purchase: a good welcome series shortens it noticeably.
- Unsubscribe / opt-out rate: a spike means you're selling too hard, too soon.
Frequently asked questions
- How many emails should a welcome series have?
- For most businesses, three to four messages over the first week works best. That's enough to confirm the signup, build rapport, prove value and invite a first action — without overwhelming a brand-new subscriber. Add more only if each one earns its place with real value.
- When should the first welcome message send?
- Immediately — within seconds of signup, while interest is at its peak and the brand is top of mind. A delayed welcome feels impersonal and misses the moment people are most likely to engage and act.
- What's the difference between a drip campaign and a newsletter?
- A drip is automated and sequential — each subscriber gets the same pre-written messages relative to when they joined or what they did. A newsletter is a one-off broadcast sent to everyone at once. Drips run themselves continuously; newsletters are created and sent each time.
